LT1158CSW#TRPBF Analog Devices

LT1158 Half Bridge N-Channel Power MOSFET Driver FEATURES DESCRIPTION + n Drives Gate of Top Side MOSFET Above V A single input pin on the LT 1158 synchronously controls n Operates at Supply Voltages from 5V to 30V two N-channel power MOSFETs in a totem pole con gura- n 150ns Transition Times Driving 3000pF tion. Unique adaptive protection against shoot-through n Over 500mA Peak Driver Current currents eliminates all matching requirements for the two n Adaptive Non-Overlap Gate Drives MOSFETs. This greatly eases the design of high ef ciency n Continuous Current Limit Protection motor control and switching regulator systems. n Auto Shutdown and Retry Capability A continuous current limit loop in the LT1158 regulates n Internal Charge Pump for DC Operation short-circuit current in the top power MOSFET. Higher n Built-In Gate Voltage Protection start-up currents are allowed as long as the MOSFET V DS n Compatible with Current-Sensing MOSFETs does not exceed 1.2V. By returning the FAULT output to n TTL/CMOS Input Levels the enable input, the LT1158 will automatically shut down n Fault Output Indication in the event of a fault and retry when an internal pull-up current has recharged the enable capacitor. APPLICATIONS An on-chip charge pump is switched in when needed to n PWM of High Current Inductive Loads turn on the top N-channel MOSFET continuously. Special n Half Bridge and Full Bridge Motor Control circuitry ensures that the top side gate drive is safely n Synchronous Step-Down Switching Regulators maintained in the transition between PWM and DC opera- n Three-Phase Brushless Motor Drive tion. The gate-to-source voltages are internally limited to n High Current Transducer Drivers 14.5V when operating at higher supply voltages. n Battery-Operated Logic-Level MOSFETs L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 5365118. TYPICAL APPLICATION 24V 1N4148 Top and Bottom Gate Waveforms 0.1F BOOST DR BOOST + V T GATE DR + IRFZ34 + 500F + 10F LOW V T GATE FB ESR T SOURCE PWM + + 0Hz TO INPUT SENSE 100kHz LT1158 R SENSE 0.015 LOAD ENABLE SENSE + 1158 TA02 V = 24V IN 1F R = 12 FAULT B GATE DR L IRFZ34 BIAS B GATE FB 0.01F GND LT1158 TA01 1158fb 1LT1158 ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage (Pins 2, 10) ......................................36V Operating Temperature Range Boost Voltage (Pin 16) ..............................................56V LT1158C ................................................... 0C to 70C Continuous Output Currents (Pins 1, 9, 15) .........100mA LT1158I ................................................40C to 85C + Sense Voltages (Pins 11, 12) .................. 5V to V + 5V Junction Temperature (Note 2) + Top Source Voltage (Pin 13) ................... 5V to V + 5V LT1158C ............................................................ 125C Boost to Source Voltage (V16 V13) ........ 0.3V to 20V LT1158I ............................................................. 150C Storage Temperature Range ...................65C to 150C Lead Temperature (Soldering, 10 sec.) ................. 300C PIN CONFIGURATION TOP VIEW TOP VIEW BOOST DR 1 16 BOOST BOOST DR 1 16 BOOST + + V 2 15 T GATE DR V 2 15 T GATE DR BIAS 3 14 T GATE FB BIAS 3 14 T GATE FB ENABLE 4 13 T SOURCE ENABLE 4 13 T SOURCE + + FAULT 5 12 SENSE FAULT 5 12 SENSE INPUT 6 11 SENSE INPUT 6 11 SENSE + + GND 7 10 V GND 7 10 V B GATE FB 8 9 B GATE DR B GATE FB 8 9 B GATE DR SW PACKAGE N PACKAGE 16-LEAD PLASTIC (WIDE) SO 16-LEAD PLASTIC DIP = 110C/W = 70C/W JA JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT1158CN PBF LT1158CN TRPBF 16-Lead Plastic DIP 0C to 70C LT1158IN PBF LT1158IN TRPBF 16-Lead Plastic DIP 40C to 85C LT1158CSW PBF LT1158CSW TRPBF 16-Lead Plastic (Wide) SO 0C to 70C LT1158ISW PBF LT1158ISW TRPBF 16-Lead Plastic (Wide) SO 40C to 85C LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT1158CN LT1158CN TR 16-Lead Plastic DIP 0C to 70C LT1158IN LT1158IN TR 16-Lead Plastic DIP 40C to 85C LT1158CSW LT1158CSW TR 16-Lead Plastic (Wide) SO 0C to 70C LT1158ISW LT1158ISW TR 16-Lead Plastic (Wide) SO 40C to 85C Consult LTC Marketing for parts speci ed with wider operating temperature ranges. *The temperature grade is identi ed by a label on the shipping container. For more information on lead free part marking, go to: